Hi,

As I mentioned earlier, I'm trying to use the AVFilter libraries to build a 
graphical equalizer in an iOS app.

The user will have the ability to manipulate the equalizer settings while audio 
is playing back. However, I don't see an API on AVFilter so I can manipulate 
the gain settings.

Therefore, it feels like I would have to recreate an equalizer AVFilter and 
rebuild the graph.

Is that the recommended way to go about this?

Thanks,

Ronak
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